artisteric
CGF, Certified Grumble Framer
My questions is, weight issues aside; Can you stack UV glass to increase the protection?
And am I correct to say that it'll provide 91% protection? Assuming that one sheet of 70% UV blocking glass will leave 30% unprotected, and stacking another sheet will provide another 70% to that left over 30%. Therefore only 9% of UV rays will penetrate?
Correct?
And am I correct to say that it'll provide 91% protection? Assuming that one sheet of 70% UV blocking glass will leave 30% unprotected, and stacking another sheet will provide another 70% to that left over 30%. Therefore only 9% of UV rays will penetrate?
Correct?